ul,li {
	list-style: none;
}

.btn {
	margin-top: 30px;
}

.lf {
	float: left;
}

.mainDiv {
	width:550px;
	height: 270px;
	position: relative;
	overflow: hidden;
	margin: 0 auto;
}

.querytr{
	position: absolute;
	left: 0px;
	z-index: 2;
	top: 10px;
	width: 1400px;
}

.querytd{
	width: 120px;
	height: 100px;
	float: left;
	margin: 0 8px;
}

.prepic{
	float: left; 
	margin-top: 100px; 
	margin-right: 0px;	
}

.nextpic {
	float: right;
	margin-top: 100px;
	margin-right:45px;
}
